Kedu otu esi eme eriri carbon?

Carbon eriri, mejupụtara combos nke na-adịghị amasị ihe (fiber na resin), ha mgbanwe, ya mere, talorability, square tụọ Central na amara ha. Dị ka ígwè ngbanwe, carbon fiber composites na-enye okpukpu iri ike nke ígwè. Ndị na-emepụta eriri carbon na-emepụta ngwaahịa nwere nha nha nha, mana ọ bụghị otu. Fibre Carbon dịgasị iche na modul tensile (ma ọ bụ isi ike kpebisiri ike dị ka nrụrụ n'okpuru eriri) yana ike, mkpakọ na ike ike ọgwụgwụ.

Kpọtụrụ anyị

A na-enweta eriri carbon sitere na PAN ụbọchị ndị a na modulus dị ala (ihe na-erughị nde iri atọ na abụọ lbf / in² ma ọ bụ Msi), modulus omenala (33 ruo iri atọ na isii Msi), modulus etiti (40 ruo iri ise Msi), modulu dị elu (50 ruo iri asaa Msi) na ultrahigh (70 ruo otu narị Msi).
N'okwu dị mfe, a na-emepụta eriri carbon site na ngbanwe nke ogo ogo organic precursor fiber na ikuku ikuku inert na-ekpo ọkụ na okpomọkụ dị elu karịa 1800°F (982.22 Celsius C). Nrụpụta eriri carbon, agbanyeghị, nwere ike ịbụ ụlọ ọrụ dị elu.

Polymerization na Spinning

Polymerization

Usoro a na-amalite site na ngwaahịa nri mejupụtara kemịkalụ nke a na-ezo aka dị ka ihe mmalite nke nwere ọkpụkpụ azụ nke eriri. Taa, ihe dị ka 100 pasent nke carbon fiber kere bụ nke ákwà ma ọ bụ ihe ndị na-eme ka ọkpụkpụ na-emepụta, agbanyeghị, ọtụtụ n'ime ya sitere na polyacrylonitrile (PAN), nke sitere na nitrite, na nitrite sitere na kemịkalụ propane na amonia.

Dị ka ọ na-adịkarị, usoro nhazi nke mbụ na-amalite site na ihe jikọrọ ogo nit rile compound nke jikọtara ya na reactor nwere acrylic co monomer plasticized na ihe na-akpali akpali dị ka acid, dioxide, mmanụ nke vitriol ma ọ bụ acid. Ijikọta na-aga n'ihu na-enye ohere ka ihe ndị ahụ jikọta, na-eme ka ụfọdụ na-agbanwe agbanwe na ịdị ọcha, na ịmalite ịmepụta radicals n'efu n'ime usoro ihe omimi nke nitrite. Nke a mgbanwe utịp ke chemical usoro, na-arụpụta ogologo yinye polymers na ụdị acrylic fibers.Details nke chemical usoro, dị ka okpomọkụ, ikuku, kpọmkwem co monomers na catalysts, square ụfọdụ proprietary. Mgbe ịsachara na ihicha, nitrite dị n'ụdị ntụ ntụ na-agbaze na ihe mgbaze organic dị ka dim ethyl sulfide (DMSO), dimethylacetamide (DMAC) ma ọ bụ dimethylformamide (DMF), ma ọ bụ ihe mgbaze mmiri, dị ka nọmba atọm 30 chloride na rhodamine salts. Ihe mgbaze na-edozi ahụ na-eme ka ịzenarị mmerụ ahụ nke igwe, nke nwere ike imerụ nkwụsi ike ikuku nke usoro ahụ wee gbuo oge ọrụ okpomọkụ nke eriri emechara. N'oge a, ntụ ntụ na ihe mgbaze nkwusioru ma ọ bụ precursor "mkpuchi" bụ na agbanwe agbanwe nke sirop. Nhọrọ nke ihe mgbaze na Ya mere ogo njikwa nke viciousness nke mkpuchi (site na omimi filtration) square ụfọdụ dị oké mkpa na ihe ịga nke ọma ogbo nke eriri e guzobere.
Ntugharị
PAN fibers square tụrụ nke a na-eme site na usoro a na-akpọ spinning mmiri. A na-emikpu ihe mkpuchi ahụ n'oge mmiri mmiri na-eme ka mmiri dị n'okike usoro bathtub na extruded site oghere n'oge a spinneret arụpụtara si bara uru. Itie ahụ dabara na ụdị filament dị iche iche achọrọ nke eriri PAN (dịka ọmụmaatụ, oghere 12,000 nke eriri carbon 12K). A na-adọta eriri eriri mmiri a na-agbakọ nke ukwuu na nke na-adịghị ike na-adọta site na rola iji wepụ ihe na-emebiga ihe ókè, wee kpoo ma gbatịa ka ọ gaa n'ihu na nhazi nke PAN. Ebe a, ụdị na esịtidem cross-ngalaba nke filaments square ụfọdụ kpebisiri ike ruo n'ókè nke na-ahọrọ ihe mgbaze na gị n'ụlọnga banye na precursor emep uta eri, nke ukwu nke erughị ala etinyere, na kwa pc elongation nke filaments. Nke ikpeazụ bụ nke onye ọ bụla na-emepụta ihe. Ihe ọzọ na-atụgharị mmiri mmiri nwere ike ịbụ usoro ngwakọta a na-akpọ nkụ ọkụ ọkụ/mmiri na-agbagharị mmiri, nke na-eji oghere ikuku kwụ ọtọ n'etiti eriri na nakwa usoro ịsa ahụ. Nke a na-eduga na eriri PAN na-egbuke egbuke nke na-eme ka eriri / matrix rosin interface dị n'ime ihe mgbagwoju anya nzọụkwụ ikpeazụ n'ime nhazi nke PAN precursor fibers bụ na iji mmanụ emecha kwụsị iji kwụsị viscous filaments site na agglomerating. Ihe atụ square nke eriri PAN na-acha ọcha wee kpọọ nkụ ọzọ wee merụọ ahụ n'obere spool.

Oxidation na Carbonization

Oxidation

Ihe nha square bobbins ndị a kwajuru n'ime nkata, yana n'ime mmepụta ogologo oge, ogbo oxidization, PAN fibers square size na-enye nri site na usoro ọkụ raara onwe ya nye. Tupu ha abanye ngwa ngwa kichin bụ isi, PAN fibers square size na-etinye n'ime akpa ma ọ bụ mpempe akwụkwọ a na-akpọ warp. Okpomọkụ ụlọ ahụ sitere na 392 °F (ihe dịka 200 Celsius) ruo 572 Celsius F (300 Celsius).

Iji zere ịgba ọsọ okpomọkụ unharness (atụmatụ enthalpy unharness ofụri oxidization, calculable na abụọ,000 kJ / kilogram, ịkwaga The ezi fireplaces ize ndụ), kichin ngwa na-eji mgbasa nke eruba nke ikuku ụdị iji nyere aka igbasa okpomọkụ na njikwa okpomọkụ. N'ịbụ nke otu kemịkalụ precursor na-anya, oge oxidization dị nnọọ iche, agbanyeghị, Littler na-eme atụmatụ na a ga-agbanwe ihe ndọta 24K n'ogo nke ihe dị ka ụkwụ iri anọ na atọ kwa mita iri na atọ n'otu nkeji na ahịrị nwere nnukwu ọkụ ọkụ. N'ikpeazụ, ihe ngbanwe (nkwụsi ike) PAN fibers nwere site na ihe dị ka narị ise ruo ihe ruru iri isii na ise carbon molecule na nguzozi bụ gas, ngwakọta nke nọmba atọm 7 na O.
Carbonization
Carbonization na-eme n'oge ikuku inert (enweghị oxygen) n'ụdị ọkụ a haziri ahazi, jiri usoro na-abawanye okpomọkụ usoro. N'elu mmiri na mpụta nke ụlọ ọ bụla, ụlọ ndozi na-egbochi ntinye O n'ihi molekul O ọ bụla na-agafe ngwa ngwa kichin na-ewepụ ntakịrị n'ime eriri. Nke a nwere ike igbochi mfu nke carbon a na-emepụta na okpomọkụ dị otú ahụ. N'ime enweghị O, naanị mkpụrụ ndụ ndị na-abụghị carbon, yana mgbakwunye na ogige Organic dị iche iche na-agbanwe agbanwe (nke kwụsiri ike na ọkwa ogo nke iri anọ ruo iri asatọ ppm) na akụkụ (dị ka mpekere fiber etinyere nke ọma) na-ewepụ ma wepụ ya na ngwa kichin maka ọgwụgwọ ọgwụgwọ n'ime ọkụ na-achịkwa gburugburu ebe obibi. carbonization amalite n'oge a okpomọkụ ụlọ, nyefee eriri na 1292 °F (ca. 700 °C) ka 1472 °F (700 °C ka 800 °C) na-agwụ n'oge a okpomọkụ ụlọ na 2192 °F (ca. 1,200 °C) na 2732 °F (ca. 1,500). 1500 Celsius C). A na-ekpebi ọnụọgụ nke ọnụ ụlọ site na modul chọrọ n'ime eriri carbon; Ọnụ ego dị elu nke dị elu na nke na-adịghị agafe agafe bụ nke na-aga n'ihu na okpomọkụ nke a ga-enweta site na ọkụ ọkụ. ọ bụ ezie na ịga n'ihu bụ nke nwe ya na ọkwa carbon fiber ọ bụla dị iche kpamkpam, a na-agbakọ n'ihu oxidization n'ime awa, agbanyeghị na ọnụego carbonisation na-ebelata site n'usoro ịdị ukwuu na nkeji. Ozugbo eriri na-agbanwe ọnọdụ, ọ na-ebelata ibu na olu, na-ebelata ogologo site na ise ruo 100%, ma belata dayameta. N'ezie, ntughari quantitative mmekọrịta nke PAN precursor na PAN carbon fiber bụ banyere 2: 1 na kwa ikike ịkwaga bụ a nta ego karịa otu ụzọ - ya bụ, ukwuu obere ihe na-abanye na usoro. Nke a ga-abawanye njupụta eriri site na ~ 1.18 g / cc ruo otu.38 g / cc.

Ngwọta elu na nha nha

Ngwọta elu na nha nha
Nzọụkwụ na-esote dị mkpa maka ịrụ ọrụ fiber, yana mgbakwunye na ndị na-ebu ụzọ, ọ kacha mma ịmata ọdịiche dị n'otu ngwaahịa na ngwaahịa ndị asọmpi. Adhesion n'etiti matriks organic compound na ya mere carbon fibers dị mkpa maka ime ka ihe mejupụtara ya sie ike; N'oge usoro mmepụta eriri carbon, a na-eme ọgwụgwọ elu iji bulie nrapado a.

Oge nzipu: Nov-01-2018

Kedu ka esi eme eriri carbon?

Kedu otu esi eme eriri carbon?

Polymerization na Spinning

Oxidation na Carbonization

Ngwọta elu na nha nha